Gasolene system eor engines



E. H. SHERBONDY.

GASOLENE SYSTEM FOR ENGINES.

APPLICATION FILED APR. 23. 1917.

E 1s 0 W I I IV VE/V foa Patented Dec. 2, 1919.

UNITED STATES PATENT OFFICE.

EARL H. SHERBONDY, OF CLEVELAND, OHIO, ASSIGNOR 0F ONE-HALFTO ROBERT B. ABBOTT, 0F CLEVELAND, OHIO.

GASOLENE SYSTEM FOR ENGINES.

Specification of Letters Patent, Patented Dec, 2, 1919,

Application filed April 23, 1917. Serial N0. 163,772.

To all whom it may concern:

Be it known that I, EARL H. SHERBoNnr, a citizen of the United States, and a res1- dent of Cleveland, county of C-uyahoga, and State of Ohio, have invented a new and useful Improvement in Gasolene Systems for Engines, of which the following is a specification, the principle herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions. p p

The present invention, relating as indicated to a. fuel supply system for engines, is more particularly concerned with a systern of the type commonly known as a vacuum system, and is intended to avoid the difiiculties which have been met with the systems of this type which are now in use. A further object of the invention is the simplification of such asystem involving the use of fewer parts than the systems now in use, and avoiding the complicated mechanisms which are liable-to get out of order and which do not at all times operate successfully. To the accomplishment of the foregoing and related ends, said invention,

.then. consists of the means hereinafter fully described and particularly pointed out in the claim.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Figure 1 is a side elevation partially in section. and showing more or less diagrammatically the parts and connections of my improved system; and Fig. 2 is a longitudi; nal section through a modification of one part of the apparatus.

Referring now to Fig. 1, there is shown a reservoir or .tank 1 adapted to be filled with liquid fuel and connected by means of a conduit 2 with a constant level chamber 3.

. This chamber 3 is closed to the atmosphere and is provided with an internal rising to a predetermined height therein and separating the chamber into two chambers 5 and 6. The part 6 is of course in the form of an open receptacle andthe conduit 2 enters the same below the top of the partition 4. From the bottom of the chamber 5 there in the chamber 6.

chamber 3 out of the portion 6 thereof and of the invention being a pump 15, or,

partition 4;

is a returnconduit 7 leading to the reservoir 1 and serving to return to the reservoir any fuel which overflows the partition -1. The partition thus serves to fix the maximum depth of fuel which can be maintained Extending from the bureter.

As already explained the partition 1 de-- termines the maximum fuel depth in the chamber 6 and means are also provided for maintaining this maximum depth therein, thus renderingthe chamber 6 capable of operating as does the float chamber of the ordinary carbureter and supplying fuel to the nozzle 8 connected thereto under a constant head. This means just referred to may take any of several forms, and I have shown in Figs. 1 and 2 two constructions adapted to maintain a constant supply of fuel in the chamber 6 by liftingthe same from the tank 1 through the conduit 2. Thus in Fig. 1 there is shown an intermediate 'chamber 10 into the bottom of which the conduit 2 extends, where there is mounted a check valve 11 adapted to permit valve 13 is mounted in the tube 12 at about.

the level of the top of the chamber 10, this valve also .serving to permit the flow of fuel in the direction of the tank 3 only and not in the reverse direction. Connected to the top of the chamber 10 is a conduit 14; extending toany suitable pulsating means, such as as shown in Fig. 2, a diaphragm 16, the diaphragm being operated by the pulsations in the engine cylinder, to which it is connected on one side by means of a conduit 17.

The function of this pulsating means is to produce intermittent variations in the pressure existing in the chamber 10 on the liquid therein. When this pressure is lowered, as it is on every outward stroke of the piston 18 in .the pump, fuel is drawn through theconduit 2 into the chamber 10, but is not forced into the tube 12 on this stroke of the pump. Upon every increase in the pressure existing in the chamber 10, (caused by the inward stroke of the piston 18) the fuel in the chamber 10 is forced upwardly through the tube 12 and conduit 2 and into the chamber 3.

It is a matter of indifi'erence as to whether the chamber 3 is filled at a higher rate of speed than necessary as the excess fuel drawn into the chamber merely overflows into the chamber 5 and is returned through the line 7 to the reservoir 1. A constant supply of fuel is thus maintained in the chamber 6 and this fuel is therefore supplied to the nozzle 8 under a constant head,

while a very small pump will produce sufii-' cient quantity of ,fuel to maintain the chamber 6 in a filled condition, and, if desired, the pump can be replaced by mechanism such as is shown in Fig. 2, which is operated directly from the engine cylinder. present system is not only extremely simple in its construction, but it avoids the use of any float in the chamber 6, which replaces the float chamber of thecarbureter and thus The - valves disposed in said conduits permitting flow away from said reservoir and toward said chamber only, an intermediate chamber of appreciable size disposed about the ends of said conduits, and means-adapted to alternately increase and decrease the pressure in said intermediate chamber, thereby alternately drawing fuel thereinto and then forcing it into said conduit leading to said fuel reservoir.

Signed by me, this 20 day of April, 1917 EARL H. SHERBONDY. 

